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    CVE-2020-14966

    An issue was discovered in the jsrsasign package through 8.0.18 for Node.js. It allows a malleability in ECDSA signatures by not checking overflows in the length of a sequence and '0' characters appended or prepended to an integer. The modified signatures are verified as valid. This could have a security-relevant impact if an application relied on a single canonical signature.

    Published:Jun 22, 2020
    Last Modified:Nov 21, 2024
    EPS:Jun 22, 2020
    EPSS Score:0.0028
    CVSS Score:7.5

    Affected Products

    Vendor
    Jsrsasign Project
    Product
    Jsrsasign
    Vendor
    Netapp
    Product
    Max Data

    Exploits

    https://github.com/kjur/jsrsasign/issues/437https://github.com/kjur/jsrsasign/issues/437

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-463 Padding Oracle Crypto Attack
    CAPEC-475 Signature Spoofing by Improper Validation

    Related CVEs

    CVE-2026-4603 (CVSS 2) — Versions of the package jsrsasign before 11.1.1 are vulnerable to Division by zero due to the RSASetPublic/KEY…
    CVE-2026-4601 (CVSS 8.8) — Versions of the package jsrsasign before 11.1.1 are vulnerable to Missing Cryptographic Step via the KJUR.cryp…
    CVE-2026-4599 (CVSS 9.3) — Versions of the package jsrsasign from 7.0.0 and before 11.1.1 are vulnerable to Incomplete Comparison with Mi…
    CVE-2026-4598 (CVSS 7.7) — Versions of the package jsrsasign before 11.1.1 are vulnerable to Infinite loop via the bnModInverse function …
    CVE-2026-4602 (CVSS 7.7) — Versions of the package jsrsasign before 11.1.1 are vulnerable to Incorrect Conversion between Numeric Types d…
    CVE-2026-4600 (CVSS 8.1) — Versions of the package jsrsasign before 11.1.1 are vulnerable to Improper Verification of Cryptographic Signa…
    CVE-2024-21484 (CVSS 7.5) — Versions of the package jsrsasign before 11.0.0 are vulnerable to Observable Discrepancy via the RSA PKCS1.5 o…
    CVE-2022-25898 (CVSS 7.7) — The package jsrsasign before 10.5.25 are vulnerable to Improper Verification of Cryptographic Signature when J…
    CVE-2021-30246 (CVSS 9.1) — In the jsrsasign package through 10.1.13 for Node.js, some invalid RSA PKCS#1 v1.5 signatures are mistakenly r…
    CVE-2020-14968 (CVSS 9.8) — An issue was discovered in the jsrsasign package before 8.0.17 for Node.js. Its RSASSA-PSS (RSA-PSS) implement…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High